Allen-Bradley PLC-5 series User manual

Publication17855.13 April 1996

Enhanced PLC5

Programmable Controller

Firmware Upgrade

(Catalog Numbers 1785-L11B, -L20B, -L30B,

-L40B, -L40L, -L60B, -L60L, -L80B)

These instructions describe:

•an important safety precaution involving static electricity

discharges

•how to upgrade the processor firmware

For more information about PLC-5 processors, see the Enhanced and

Ethernet PLC-5 User Manual, publication number 1786-6.5.12. For

more information, contact your Allen-Bradley service representative.

Printed circuit board components and Programmable Read-only

Memory (PROM) devices can be damaged during routine handling

and installation. Follow these precautions to reduce static electricity

discharges before you upgrade the processor firmware.

•Handle the printed circuit boards and PROMs by the case or

carrier without touching the pins or the edge connector.

•Use a static-free workstation.

•Connect the static-free workstation to ground through a minimum

200K ohm resistance.

•Wear a grounded, conductive wrist strap with a minimum 200K

ohm resistance.

•Ground all tools before you begin to upgrade the firmware.

•Control the relative humidity of the installation area – ideal

conditions are 40% to 60% relative humidity.

AB

Installation Instructions

Using These Instructions

Before You Install ...

Allen-Bradley Replacements

Enhanced PLC-5 Programmable Controller Firmware Upgrade2

Publication17855.13 April 1996

Follow these steps to upgrade the processor firmware.

1Save

processor memory using the programming software.

Remove the battery cover and disconnect the battery

Skip this step if you have a PLC5/1

1 or 5/20 processor

Remove the phillips head screw near the channel 1B LED and

gently remove the channel 1 communication plug. Be aware

that the memory grounding clip may move or drop off from the

cover mounting tab.

Skip this step if you have a PLC5/1

1 or 5/20 processor

Remove the lug nuts that hold the serial channel to the metal

face plate. These lug nuts are located on the exposed circuit

board for PLC5/40 and 5/60 processors.

Remove the four screws that hold the right side plastic cover

Remove the washers and two remaining screws located in the

middle of the exposed circuit board.

Separate the two processor boards by pulling the exposed circuit

board at the backplane edge connector away from the metal cover

as you would open a book. Notice the direction in which the battery

cable is wrapped around the nearby standof

f to prevent obstruction

of the dip switch. After you separate the boards, pull the battery cable

through the battery housing (still attached to the circuit board.)

Disconnect the wires leading from the keyswitch to the stake pins on

the exposed circuit board.

keyswitch;

selects processor mode

channel 1A communication

port;

8pin miniDIN, DH+ programming

terminal connection

channel 1A status indicator

channel 0 serial port

To Upgrade the Processor

Firmware ...

Enhanced PLC-5 Programmable Controller Firmware Upgrade 3

Publication17855.13 April 1996

Observe

the orientation of the pin 1 indicators before you remove each PROM. Replace each of the

indicated PROMS, checking to see that the pin 1 indicators are correctly oriented.

Example (for PLC5/40, 5/60, and 5/80 series A, B, and C processors)

Assemble the processor and check to see that it starts up properly

. Reload your program and make certain that it

runs properly

. If you have any questions, call AllenBradley T

echnical Support at (216) 6466800.

For this processor:

Replace these PROMs:

PLC5/1

1 and 5/20 series A and C

PLC5/30 series A and C

PLC5/40, 5/60, and 5/80 series A, B, and C

U70 and U61

U5 and U31

U5, U16 or U13, and U31

U–31

U–5

U–16

Skip this step if you do not have plug firmware

. If you have communication plug PROMS, you may

have received catalog number 6690DS2 PROMs with your upgrade kit. T

o update these PROMs, follow

the previous procedure to remove each plug and replace the PROM in socket U7.

U–7

Allen-Bradley Replacements

Publication17855.13 April 1996

AllenBradley, a Rockwell Automation Business, has been helping its customers improve

productivity and quality for more than 90 years. We design, manufacture and support a broad

range of automation products worldwide. They include logic processors, power and motion

control devices, operator interfaces, sensors and a variety of software. Rockwell is one of the

world's leading technology companies.

Worldwide representation.

Argentina •

Australia

•

Austria

•

Bahrain

•Belgium •Brazil •

Bulgaria

•

Canada

•Chile •

China, PRC

•

Colombia

•Costa Rica •

Croatia

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Cyprus

•Czech Republic •

Denmark

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Ecuador

•Egypt •El Salvador •Finland •France •

Germany

•

Greece

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Guatemala

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Honduras

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Hong Kong

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Hungary

•Iceland •

India

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Indonesia

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Ireland

•Israel •Italy •Jamaica •

Japan

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Kuwait

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Lebanon

•Malaysia •Mexico •

Netherlands

•New Zealand •

Norway

•Pakistan •

Peru

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Philippines •

Poland

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Portugal

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Puerto Rico

•

Qatar

•

Romania

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Russia-CIS

•

Saudi Arabia

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Singapore

•Slovakia •Slovenia •

South Africa, Republic

•Spain •

Sweden

•Switzerland •T

aiwan

•Thailand •T

urkey

•

United Arab Emirates

•

United Kingdom

•

United States

•

Uruguay

•V

enezuela

•Yugoslavia

AllenBradley Headquarters, 1201 South Second Street, Milwaukee, WI 53204 USA, Tel: (1) 414 3822000 Fax: (1) 414 3824444

Publication17855.13

April 1996

PN 95512530

1996 AllenBradley Company

, Inc. Printed in USA

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